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Finding the Fourth Proportional to 66,686.15, 100,099.72 and 65,180.23

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Solution

The fourth proportional to 66,686.15, 100,099.72 and 65,180.23 is: 97,839.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,686.15 : 100,099.72 = 65,180.23 : x
  2. Step 2: Convert to fraction form
    66,686.15/100,099.72 = 65,180.23/x
  3. Step 3: Cross multiply
    66,686.15x = 100,099.72 × 65,180.23
  4. Step 4: Simplify right side
    66,686.15x = 6,524,522,272.04
  5. Step 5: Solve for x
    x = 6,524,522,272.04/66,686.15
  6. Step 6: Final answer
    x = 97,839.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.